CN101979331B - Steel slag synthesized composite silicon-iron-calcium coagulant - Google Patents
Steel slag synthesized composite silicon-iron-calcium coagulant Download PDFInfo
- Publication number
- CN101979331B CN101979331B CN2010102974880A CN201010297488A CN101979331B CN 101979331 B CN101979331 B CN 101979331B CN 2010102974880 A CN2010102974880 A CN 2010102974880A CN 201010297488 A CN201010297488 A CN 201010297488A CN 101979331 B CN101979331 B CN 101979331B
- Authority
- CN
- China
- Prior art keywords
- filtrating
- sodium hydroxide
- hydrochloric acid
- coagulating agent
- compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to the technical field of environmental protection, and relates to an environment-friendly composite coagulant. The composite silicon-iron-calcium coagulant is prepared from the following raw materials in percentage by mass: 35 to 40 percent of acetic acid filtrate, 20 to 25 percent of hydrochloric acid filtrate, 30 to 35 percent of sodium hydroxide filtrate and 5 to 10 percent of stabilizing agent. The composite silicon-iron-calcium coagulant is mainly synthesized by steel slag, so a new way for recycling the steel slag at present is exploited, and in the processes of treating the steel slag and synthesizing the coagulant, the used process method is easy and convenient to implement, large equipment is not needed, dust cannot be generated to avoid secondary pollution and facilitate environmental protection, good social, environmental and economic benefits can be achieved, and the composite silicon-iron-calcium coagulant accords with the current national policy of energy conservation and emission reduction.
Description
Technical field
Patent of the present invention belongs to environmental technology field, is specifically related to utilize slag to be the synthetic compound ferrosilicon calcium coagulating agent of raw material.
Background technology
Slag is the waste residue of discharging in the steelmaking process.Slag mainly is made up of oxide compounds such as calcium, iron, silicon, magnesium and small amount of aluminum, manganese, phosphorus.The slag comprehensive utilization approach mainly comprises several fields such as metallurgy, material of construction, agricultural use.Its treatment process mainly is that hot application method, dish sprinkle method, water quenching, wind quench method, efflorescence method and waste method.And utilize slag to prepare coagulating agent does not also become steel slag utilization in present stage main path.Therefore, be that the synthetic coagulating agent of raw material is the new way of slag comprehensive utilization with the slag.
The treatment process of slag all needs main equipment or hot conditions at present, very easily produces dust, cause secondary pollution, and these methods all can not be handled direct operational degree to slag.Therefore,, reduce dust and noise, satisfy the energy-saving and emission-reduction policy, utilize the synthetic composite coagulant of slag will become the new selection of steel slag resource utilization in order to reduce equipment cost.
Can know that from slag chemical ingredients composition slag is rich in oxide compounds such as calcium, silicon, iron, can be used as the starting material of synthetic coagulating agent.The coagulating agent that with the slag is feedstock production meets national like product standard, and coagulation performance is good, has not only solved the Multipurpose Utilization of Steel Slag problem, and helps save energy, practices thrift facility investment.
Summary of the invention
For solving the Multipurpose Utilization of Steel Slag problem, the invention provides a kind of is the compound ferrosilicon calcium of raw material synthetic coagulating agent with the slag.The present invention utilizes slag to prepare compound ferrosilicon calcium coagulating agent.Slag after the milled processed is at first soaked certain hour in acetic acid, get filtrate for later use; Filter residue soaks in hydrochloric acid then, and the heating in water bath certain hour obtains filtrating; Again with residue with sodium-hydroxide treatment post-heating, filtration, getting filtrating and regulating the pH value.At a certain temperature, acetic acid filtrating, hydrochloric acid filtrating and sodium hydroxide filtrating are mixed stirring by a certain percentage, add stablizer, promptly make compound ferrosilicon calcium coagulating agent after the slaking.Compound ferrosilicon calcium coagulating agent is acetic acid filtrating 35-40%, hydrochloric acid filtrating 20-25%, sodium hydroxide filtrating 30-35%, stablizer 5-10% by each composition quality per-cent.
Utilize slag to synthesize compound ferrosilicon calcium coagulating agent; Not only expanded the new way of current steel slag resource processing and comprehensive utilization, and in the process of handling slag and synthetic coagulating agent, the process method of use is simple and easy to do; Do not need main equipment, and can not produce dust and cause secondary pollution.This coagulating agent is main raw material with the slag, effectively utilizes waste resource, and the preparation process is pollution-free, helps environment protection, can obtain good social benefit, environmental benefit and economic benefit, meets the policy of current national energy-saving and emission-reduction.
Embodiment
Embodiment one:
Learn from else's experience slag after levigate is got filtrate for later use after in the acetum of 2mol/L, soaking 5h; Then filter residue is soaked in the hydrochloric acid soln of 2mol/L, 15h is heated in 60 ℃ of water-baths down, and filtrating is extracted in the cooling back; Again residual residue is immersed in the sodium hydroxide solution of 2mol/L and gets filtrating after the heating, regulate filtrating pH to 2.0.Under 45 ℃, with acetic acid filtrating, hydrochloric acid filtrating and sodium hydroxide filtrating proportional mixing, stirring, add certain amount of stabilizer, slaking 5d promptly obtains compound ferrosilicon calcium coagulating agent.Compound ferrosilicon calcium coagulating agent of the present invention is to be processed by the raw material of following mass percent:
Acetic acid filtrating 35%
Hydrochloric acid filtrating 25%
Sodium hydroxide filtrating 35%
Sodium phosphate 5%
Acetic acid, hydrochloric acid, sodium hydroxide, sodium phosphate are technical grade, and compound ferrosilicon calcium coagulating agent is a technical grade liquid.
Embodiment two:
Learn from else's experience slag after levigate is got filtrate for later use after in the acetum of 2.5mol/L, soaking 7h; Then filter residue is soaked in the hydrochloric acid soln of 2.2mol/L, 13h is heated in 70 ℃ of water-baths down, and filtrating is extracted in the cooling back; Again residual residue is immersed in the sodium hydroxide solution of 1.8mol/L and gets filtrating after the heating, regulate filtrating pH to 2.2.Under 50 ℃, with acetic acid filtrating, hydrochloric acid filtrating and sodium hydroxide filtrating proportional mixing, stirring, add certain amount of stabilizer, slaking 7d promptly obtains compound ferrosilicon calcium coagulating agent.Compound ferrosilicon calcium coagulating agent of the present invention is to be processed by the raw material of following mass percent:
Acetic acid filtrating 37%
Hydrochloric acid filtrating 24%
Sodium hydroxide filtrating 33%
Sodium tartrate 6%
Acetic acid, hydrochloric acid, sodium hydroxide, sodium tartrate are technical grade, and compound ferrosilicon calcium coagulating agent is a technical grade liquid.
Embodiment three:
Learn from else's experience slag after levigate is got filtrate for later use after in the acetum of 1.8mol/L, soaking 9h; Then filter residue is soaked in the hydrochloric acid soln of 1.8mol/L, 11h is heated in 80 ℃ of water-baths down, and filtrating is extracted in the cooling back; Again residual residue is immersed in the sodium hydroxide solution of 1.6mol/L and gets filtrating after the heating, regulate filtrating pH to 2.3.Under 55 ℃, with acetic acid filtrating, hydrochloric acid filtrating and sodium hydroxide filtrating proportional mixing, stirring, add certain amount of stabilizer, slaking 9d promptly obtains compound ferrosilicon calcium coagulating agent.Compound ferrosilicon calcium coagulating agent of the present invention is to be processed by the raw material of following mass percent:
Acetic acid filtrating 40%
Hydrochloric acid filtrating 20%
Sodium hydroxide filtrating 30%
Trisodium Citrate 10%
Acetic acid, hydrochloric acid, sodium hydroxide, Trisodium Citrate are technical grade, and compound ferrosilicon calcium coagulating agent is a technical grade liquid.
Claims (3)
1. one kind is the compound ferrosilicon calcium of raw material synthetic coagulating agent with the slag, and it is to be processed by following method: the slag after levigate of learning from else's experience, get filtrate for later use after in the acetum of 2mol/L, soaking 5h; Then filter residue is soaked in the hydrochloric acid soln of 2mol/L, 15h is heated in 60 ℃ of water-baths down, and filtrating is extracted in the cooling back; Again residual residue is immersed in the sodium hydroxide solution of 2mol/L and gets filtrating after the heating, regulate filtrating pH to 2.0; Under 45 ℃, with acetic acid filtrating, hydrochloric acid filtrating and sodium hydroxide filtrating proportional mixing, stirring, add certain amount of stabilizer, slaking 5d promptly obtains compound ferrosilicon calcium coagulating agent; Described compound ferrosilicon calcium coagulating agent is to be processed by the raw material of following mass percent: acetic acid filtrating 35%, hydrochloric acid filtrating 25%, sodium hydroxide filtrating 35%, sodium phosphate 5%; Acetic acid, hydrochloric acid, sodium hydroxide, sodium phosphate are technical grade, and compound ferrosilicon calcium coagulating agent is a technical grade liquid.
2. one kind is the compound ferrosilicon calcium of raw material synthetic coagulating agent with the slag, and it is to be processed by following method: the slag after levigate of learning from else's experience, get filtrate for later use after in the acetum of 2.5mol/L, soaking 7h; Then filter residue is soaked in the hydrochloric acid soln of 2.2mol/L, 13h is heated in 70 ℃ of water-baths down, and filtrating is extracted in the cooling back; Again residual residue is immersed in the sodium hydroxide solution of 1.8mol/L and gets filtrating after the heating, regulate filtrating pH to 2.2; Under 50 ℃, with acetic acid filtrating, hydrochloric acid filtrating and sodium hydroxide filtrating proportional mixing, stirring, add certain amount of stabilizer, slaking 7d promptly obtains compound ferrosilicon calcium coagulating agent; Described compound ferrosilicon calcium coagulating agent is to be processed by the raw material of following mass percent: acetic acid filtrating 37%, hydrochloric acid filtrating 24%, sodium hydroxide filtrating 33%, sodium tartrate 6%; Acetic acid, hydrochloric acid, sodium hydroxide, sodium tartrate are technical grade, and compound ferrosilicon calcium coagulating agent is a technical grade liquid.
3. one kind is the compound ferrosilicon calcium of raw material synthetic coagulating agent with the slag, and it is to be processed by following method: the slag after levigate of learning from else's experience, get filtrate for later use after in the acetum of 1.8mol/L, soaking 9h; Then filter residue is soaked in the hydrochloric acid soln of 1.8mol/L, 11h is heated in 80 ℃ of water-baths down, and filtrating is extracted in the cooling back; Again residual residue is immersed in the sodium hydroxide solution of 1.6mol/L and gets filtrating after the heating, regulate filtrating pH to 2.3; Under 55 ℃, with acetic acid filtrating, hydrochloric acid filtrating and sodium hydroxide filtrating proportional mixing, stirring, add certain amount of stabilizer, slaking 9d promptly obtains compound ferrosilicon calcium coagulating agent; Described compound ferrosilicon calcium coagulating agent is to be processed by the raw material of following mass percent: acetic acid filtrating 40%, hydrochloric acid filtrating 20%, sodium hydroxide filtrating 30%, Trisodium Citrate 10%; Acetic acid, hydrochloric acid, sodium hydroxide, Trisodium Citrate are technical grade, and compound ferrosilicon calcium coagulating agent is a technical grade liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102974880A CN101979331B (en) | 2010-09-30 | 2010-09-30 | Steel slag synthesized composite silicon-iron-calcium coagulant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102974880A CN101979331B (en) | 2010-09-30 | 2010-09-30 | Steel slag synthesized composite silicon-iron-calcium coagulant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101979331A CN101979331A (en) | 2011-02-23 |
| CN101979331B true CN101979331B (en) | 2012-02-01 |
Family
ID=43599884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102974880A Expired - Fee Related CN101979331B (en) | 2010-09-30 | 2010-09-30 | Steel slag synthesized composite silicon-iron-calcium coagulant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101979331B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108773882B (en) * | 2018-06-26 | 2021-05-07 | 清华大学深圳研究生院 | Inorganic composite coagulant and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1583593A (en) * | 2004-06-04 | 2005-02-23 | 刘启旺 | One step synthesis of polymerized aluminum-iron sulfurate from industrial waste slags |
| CN1958444A (en) * | 2005-10-31 | 2007-05-09 | 武汉钢铁集团冶金渣有限责任公司 | Method for preparing ferric sulfate of polymerized silica by using metallurgy dregs |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100340999B1 (en) * | 2000-06-01 | 2002-06-20 | 이한종 | Method of producing a composite inorganic coagulant by using slag |
-
2010
- 2010-09-30 CN CN2010102974880A patent/CN101979331B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1583593A (en) * | 2004-06-04 | 2005-02-23 | 刘启旺 | One step synthesis of polymerized aluminum-iron sulfurate from industrial waste slags |
| CN1958444A (en) * | 2005-10-31 | 2007-05-09 | 武汉钢铁集团冶金渣有限责任公司 | Method for preparing ferric sulfate of polymerized silica by using metallurgy dregs |
Non-Patent Citations (2)
| Title |
|---|
| Sebastian Teir et al.Dissolution of steelmaking slags in acetic acid for precipitated calcium carbonate production.《Energy》.2007,第32卷(第4期),528-539. * |
| 于衍真等.旋流混凝作用影响钢渣混凝剂混凝效果的研究.《济南大学学报(自然科学版)》.2005,第19卷(第3期),278-279. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101979331A (en) | 2011-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102559960B (en) | Steel slag treating method | |
| CN107611433A (en) | A kind of method for preparing battery-grade iron phosphate using heavy metal sewage sludge and heavy metal spent acid | |
| CN103215578A (en) | Metal passivant prepared from diosorea cirrhosa residue extracting liquid | |
| CN104479835A (en) | Concrete releasing agent prepared from rapeseed oil and preparation method of concrete releasing agent | |
| CN106698887B (en) | A kind of preparation method and its application method of composite inorganic flocculant poly aluminium sulfate iron | |
| CN101812588B (en) | Method for decomposing vanadium slag with solution of potassium hydroxide under normal pressure | |
| CN101979331B (en) | Steel slag synthesized composite silicon-iron-calcium coagulant | |
| CN104761296A (en) | Technology for refining glass fertilizer from waste glass | |
| CN102584042B (en) | Steel slag compound micro powder and preparation method thereof | |
| CN102115120A (en) | Method for producing calcium carbonate by using carbide slag | |
| CN104308106B (en) | A kind of ladle covering agent | |
| CN102765750A (en) | Preparation method of titanium-rich material | |
| CN103086488B (en) | Method for preparing flocculating agent, namely polyaluminum ferric silicate from galvanized sludge and iron tailings | |
| CN107056124B (en) | A kind of preparation method of cement grinding aid | |
| CN102115828A (en) | Method for preparing iron and aluminum and coproducing sodium sulfate from red mud produced by bayer process | |
| CN109516448A (en) | The method that yellow phosphorus furnace slag and phosphoric acid by wet process prepare calcium monohydrogen phosphate and white carbon black | |
| CN103102051B (en) | Method for preparing calcium ferrite steelmaking slag former by use of galvanizing sludge | |
| CN101955232B (en) | Poly silicate ferric aluminum chloride (PSFAC) coagulant prepared from grain slag | |
| CN104310928B (en) | A kind of method of composite modifier modification fluorgypsum | |
| CN101979332B (en) | Polymeric calcium aluminosilicate coagulant prepared from gold tailings | |
| CN109809419B (en) | Method for preparing polysilicate aluminum ferric flocculant | |
| CN102795794A (en) | Modification processing method for converter gas quenched steel slag stability and limestone modifier | |
| CN104250036B (en) | Utilize dephosphorization composite flocculation agent and preparation method and using method that red mud makes | |
| CN105236459A (en) | Preparation method of polyaluminum chloride | |
| CN106367604A (en) | Method for extracting vanadium pentoxide from secondary vanadium slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120201 Termination date: 20140930 |
|
| EXPY | Termination of patent right or utility model |